Starter Solenoid: Testing and Inspection

Starter Solenoid
Make sure that the solenoid is isolated electrically from the starter motor. Using a Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check for continuity between S-terminal and M-terminal, and between S-terminal and ground starter frame and magnet. If resistance is greater than 0.08 ohm, the following conditions may exist:
- open wire; replace starter solenoid.
- ice, dirt or other foreign material preventing contact; service as necessary.

Solenoid S-Terminal Circuit Resistance
Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check the resistance of the entire S-terminal circuit, including all the switches, wires, and connections. Resistance should be less than 0.08 ohm.







Solenoid M-Terminal
1. Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent, check for continuity between the solenoid M-Terminal and the solenoid housing.
2. If resistance is greater than 0.08 ohm, replace the starter solenoid.